You MUST have a 240V outlet to operate this heater properly. An adapter/converter will not increase the output of a 120V outlet to 240V outlet. You may use a 240V adapter plug if your outlet is no the same configuration as the plug shown here. Dura Heat 3,750W Electric Garage Heater – High-Performance Forced Air Heater for Garages, Workshops, and Basements The Dura Heat 3,750W Electric Garage Heater is a powerful, versatile solution for efficiently heating large spaces. As a forced air heater electric, it operates on 240V power, providing fast and consistent heating for areas like garages, workshops, or basements. Unlike standard space heaters, this unit is designed for high-performance heating, making it perfect for larger spaces. Please note that it requires a 240V outlet and is not compatible with standard household plugs. This electric garage heater features a durable stainless steel heating element that ensures reliable, long-lasting performance. Whether you need a garage heater for permanent installation or a portable heater to move around as needed, this model provides flexibility. It comes with a wall/ceiling mounting kit for permanent installation, while its compact design allows you to easily transport it to different areas, making it ideal for various uses. The fan-forced air circulator distributes heat evenly throughout spaces up to 500 square feet, ensuring there are no cold spots. In warmer months, you can switch to the fan-only mode to circulate air without heat, offering year-round utility. This small space heater provides versatility for any season. Safety is paramount, as the unit includes an overheat shutoff feature, automatically powering off if the temperature rises too high. The electric heater has a compact, rugged design, measuring approx. approx. 12" H x 9" W x 11" D, making it a durable and space-saving option for any environment. Its tubular steel cabinet construction ensures it can withstand tough conditions, making it the perfect electric heater indoor or for outdoor garage spaces. Convenience is at the forefront with the temperature dial, allowing you to adjust the temperature and settings of the small heater as needed. With 3,750 watts of power and generating 12,800 BTUs, this electric heater is a high-powered solution for medium-sized spaces. The heater comes equipped with a 6-foot, 14 AWG cord and uses a NEMA #6-20P plug for easy connection to 240V outlets. Important Installation Notes: This electric heater indoor requires a NEMA #6-20P outlet and will not work with standard household outlets. Adapters cannot convert a 120V outlet to 240 V. If the outlet doesn’t match the plug, a 240V adapter may be used.